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Hi, this is my first post, very new to fossil/mineral collecting. Does anyone recognize this portion of what I believe to be a fossil? Pic 1 is what I am calling the top. pic 2 is a close up of an interesting portion of the top. Pic 3 is where the top and bottom wrap around the side to meet each other at some kind of a "V". Pic 4 is what I am calling the bottom. My in-laws are building a house in North Arkansas, I found this in the excavation. I have already identified coral, stromatolites, Shells in other rocks found in the same piles. The main minerals found are quartzite, chert, red sandstone, red clay, calcites, iron, zinc. The area they are found appears to straddles these two regions according to Arkansas geological maps. The house is being built on the top of a large hill: https://www.geology.arkansas.gov/docs/pdf/geology/Collecting-Fossils-in-Arkansas.pdf The Salem Plateau: contains the oldest rock present and is made up of dolostone, limestone and sandstone of Ordovician age. Algal structures called stromatolites, corals, brachiopods, bryozoa, crinoids, gastropods, and some cephalopods are the fossils most commonly found in the limestone and dolostone. Trilobite fragments are less common but are present in these strata. The St. Peter Sandstone contains the vertical trace fossil Skolithos. Silurian and Devonian strata are limited in their outcrop area. Silurian limestones contain crinoids, trilobite fragments, and small algal mounds. Devonian strata are usually unfossiliferous. The Springfield Plateau: is made up of limestone, sandstone, shale, and chert from the Mississippian Period. Corals, bryozoa, brachiopods, crinoids, bivalves, cephalopod, and gastropods are common in these rock types. Trilobite fragments are less common but are present in these rock types as well. Echinoid fragments are present in the Boone Formation. Starfish and bivalve resting traces called Asteriacites and Lockeia respectively, and worm trails are common at certain localities in the Batesville Sandstone